{"calculation_version":"2026-10-10.1","days":30,"nights":[{"best_hours":7.75,"best_label":"good","best_window":"21:25\u201305:10","dark_hours":7.84,"date":"2042-09-05","moon_free_dark_hours":1.42,"moon_illumination":59,"moon_separation":83.6,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.3,"transit_local":"23:20","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":7.92,"best_label":"good","best_window":"21:25\u201305:20","dark_hours":7.89,"date":"2042-09-06","moon_free_dark_hours":2.17,"moon_illumination":48,"moon_separation":90.4,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.2,"transit_local":"23:15","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":7.92,"best_label":"good","best_window":"21:25\u201305:20","dark_hours":7.95,"date":"2042-09-07","moon_free_dark_hours":3.07,"moon_illumination":37,"moon_separation":97.0,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.2,"transit_local":"23:15","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":8.0,"best_label":"good","best_window":"21:20\u201305:20","dark_hours":8.0,"date":"2042-09-08","moon_free_dark_hours":4.12,"moon_illumination":27,"moon_separation":103.1,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.3,"transit_local":"23:10","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":8.0,"best_label":"good","best_window":"21:20\u201305:20","dark_hours":8.06,"date":"2042-09-09","moon_free_dark_hours":5.25,"moon_illumination":18,"moon_separation":108.6,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.3,"transit_local":"23:05","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":8.08,"best_label":"good","best_window":"21:15\u201305:20","dark_hours":8.11,"date":"2042-09-10","moon_free_dark_hours":6.42,"moon_illumination":11,"moon_separation":113.2,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.3,"transit_local":"23:00","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":8.0,"best_label":"good","best_window":"21:15\u201305:15","dark_hours":8.17,"date":"2042-09-11","moon_free_dark_hours":7.57,"moon_illumination":6,"moon_separation":116.6,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.2,"transit_local":"23:00","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":8.0,"best_label":"good","best_window":"21:15\u201305:15","dark_hours":8.22,"date":"2042-09-12","moon_free_dark_hours":8.2,"moon_illumination":2,"moon_separation":118.8,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.3,"transit_local":"22:55","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":8.0,"best_label":"good","best_window":"21:10\u201305:10","dark_hours":8.27,"date":"2042-09-13","moon_free_dark_hours":8.27,"moon_illumination":0,"moon_separation":119.5,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.3,"transit_local":"22:50","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":7.92,"best_label":"good","best_window":"21:10\u201305:05","dark_hours":8.33,"date":"2042-09-14","moon_free_dark_hours":8.32,"moon_illumination":0,"moon_separation":118.9,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.3,"transit_local":"22:45","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":7.92,"best_label":"good","best_window":"21:05\u201305:00","dark_hours":8.38,"date":"2042-09-15","moon_free_dark_hours":8.37,"moon_illumination":2,"moon_separation":116.9,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.2,"transit_local":"22:40","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":7.92,"best_label":"good","best_window":"21:05\u201305:00","dark_hours":8.43,"date":"2042-09-16","moon_free_dark_hours":8.4,"moon_illumination":6,"moon_separation":113.7,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.2,"transit_local":"22:40","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":7.83,"best_label":"good","best_window":"21:05\u201304:55","dark_hours":8.48,"date":"2042-09-17","moon_free_dark_hours":8.47,"moon_illumination":11,"moon_separation":109.6,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.3,"transit_local":"22:35","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":7.83,"best_label":"good","best_window":"21:00\u201304:50","dark_hours":8.54,"date":"2042-09-18","moon_free_dark_hours":8.52,"moon_illumination":18,"moon_separation":104.7,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.3,"transit_local":"22:30","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":7.75,"best_label":"good","best_window":"21:00\u201304:45","dark_hours":8.59,"date":"2042-09-19","moon_free_dark_hours":8.13,"moon_illumination":25,"moon_separation":99.2,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.3,"transit_local":"22:25","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":7.67,"best_label":"good","best_window":"21:00\u201304:40","dark_hours":8.64,"date":"2042-09-20","moon_free_dark_hours":7.62,"moon_illumination":34,"moon_separation":93.4,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.2,"transit_local":"22:20","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":7.75,"best_label":"good","best_window":"20:55\u201304:40","dark_hours":8.69,"date":"2042-09-21","moon_free_dark_hours":6.97,"moon_illumination":44,"moon_separation":87.4,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.2,"transit_local":"22:20","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":7.67,"best_label":"good","best_window":"20:55\u201304:35","dark_hours":8.74,"date":"2042-09-22","moon_free_dark_hours":6.17,"moon_illumination":54,"moon_separation":81.3,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.3,"transit_local":"22:15","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":7.67,"best_label":"good","best_window":"20:50\u201304:30","dark_hours":8.79,"date":"2042-09-23","moon_free_dark_hours":5.15,"moon_illumination":64,"moon_separation":75.4,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.3,"transit_local":"22:10","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":7.58,"best_label":"good","best_window":"20:50\u201304:25","dark_hours":8.84,"date":"2042-09-24","moon_free_dark_hours":3.98,"moon_illumination":74,"moon_separation":70.0,"score":null,"score_astronomy":94,"score_weather":null,"transit_alt":87.3,"transit_local":"22:05","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":7.5,"best_label":"good","best_window":"20:50\u201304:20","dark_hours":8.89,"date":"2042-09-25","moon_free_dark_hours":2.73,"moon_illumination":83,"moon_separation":65.3,"score":null,"score_astronomy":85,"score_weather":null,"transit_alt":87.2,"transit_local":"22:05","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":5.0,"best_label":"good","best_window":"20:45\u201301:45","dark_hours":8.94,"date":"2042-09-26","moon_free_dark_hours":1.43,"moon_illumination":91,"moon_separation":62.0,"score":null,"score_astronomy":64,"score_weather":null,"transit_alt":87.3,"transit_local":"22:00","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":0.42,"best_label":"good","best_window":"20:45\u201321:10","dark_hours":8.99,"date":"2042-09-27","moon_free_dark_hours":0.13,"moon_illumination":96,"moon_separation":60.5,"score":null,"score_astronomy":61,"score_weather":null,"transit_alt":87.3,"transit_local":"21:55","verdict":"unknown","weather_source":"none","weekday":"Sat"},{"best_hours":0.33,"best_label":"good","best_window":"20:45\u201321:05","dark_hours":9.04,"date":"2042-09-28","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":61.2,"score":null,"score_astronomy":62,"score_weather":null,"transit_alt":87.3,"transit_local":"21:50","verdict":"unknown","weather_source":"none","weekday":"Sun"},{"best_hours":1.08,"best_label":"good","best_window":"20:40\u201321:45","dark_hours":9.09,"date":"2042-09-29","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":64.0,"score":null,"score_astronomy":65,"score_weather":null,"transit_alt":87.2,"transit_local":"21:45","verdict":"unknown","weather_source":"none","weekday":"Mon"},{"best_hours":2.33,"best_label":"good","best_window":"20:40\u201323:00","dark_hours":9.14,"date":"2042-09-30","moon_free_dark_hours":0.0,"moon_illumination":97,"moon_separation":68.6,"score":null,"score_astronomy":70,"score_weather":null,"transit_alt":87.2,"transit_local":"21:45","verdict":"unknown","weather_source":"none","weekday":"Tue"},{"best_hours":4.08,"best_label":"good","best_window":"20:40\u201300:45","dark_hours":9.19,"date":"2042-10-01","moon_free_dark_hours":0.0,"moon_illumination":91,"moon_separation":74.6,"score":null,"score_astronomy":76,"score_weather":null,"transit_alt":87.3,"transit_local":"21:40","verdict":"unknown","weather_source":"none","weekday":"Wed"},{"best_hours":5.33,"best_label":"good","best_window":"20:35\u201301:55","dark_hours":9.23,"date":"2042-10-02","moon_free_dark_hours":0.2,"moon_illumination":83,"moon_separation":81.3,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.3,"transit_local":"21:35","verdict":"unknown","weather_source":"none","weekday":"Thu"},{"best_hours":6.5,"best_label":"good","best_window":"20:35\u201303:05","dark_hours":9.28,"date":"2042-10-03","moon_free_dark_hours":0.92,"moon_illumination":73,"moon_separation":88.3,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.3,"transit_local":"21:30","verdict":"unknown","weather_source":"none","weekday":"Fri"},{"best_hours":6.83,"best_label":"good","best_window":"20:35\u201303:25","dark_hours":9.33,"date":"2042-10-04","moon_free_dark_hours":1.78,"moon_illumination":63,"moon_separation":95.1,"score":null,"score_astronomy":100,"score_weather":null,"transit_alt":87.2,"transit_local":"21:25","verdict":"unknown","weather_source":"none","weekday":"Sat"}],"note":"score_astronomy for every night; score_weather/score only where a forecast (next 4 days) or ERA5 history exists \u2014 null otherwise","start":"2042-09-05","target":{"dec":44.25788576,"name":"EM* LkHA 190","ra":314.72388973,"simbad_url":"https://simbad.cds.unistra.fr/simbad/sim-id?Ident=V1057%20Cyg","source":"sesame","spectral_type":"F7/G3I/IIe","type":"Or*","type_text":"Orion-type variable \u2014 a young, erupting star","vmag":12.33}}